CN2535538Y

CN2535538Y - Stable safety ladder

Info

Publication number: CN2535538Y
Application number: CN02209317U
Authority: CN
Inventors: 林再锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-25
Filing date: 2002-03-25
Publication date: 2003-02-12
Anticipated expiration: 2012-03-25

Abstract

The utility model provides a stable safety ladder which has a ladder frame body constituted by four ladder feet, symmetrical fishback pans are arranged between the ladder feet, the top portion is a pedal, a crank for connecting two ladder feet is arranged on each of the two sides of the body, each of the ladder feet has an extended foot which can be stretched downward to locate and increase the length of the ladder feet, and a brace rod which can be placed outward and elongated is pivoted on the lateral face of the ladder feet. The utility model applies the concealed extended feet to increase the height of the ladder frame and applies the brace rob to stabilize the ladder frame body.

Description

Steady emergency staircase

(1) technical field:

A kind of steady emergency staircase of the utility model, relevant with ladder, more detailed it, refer to a kind of steady emergency staircase especially, belong to the ladder of the usefulness of climbing.

(2) background technology:

As everyone knows, ladder be make us an instrument of the usefulness of climbing, in daily life or workplace, often to need to use, yet the height of ladder is limited, how in limited length and volume, the height of ladder is increased, and can put reposefully, be one of practitioner's project of making great efforts to research and develop.

A kind of steady emergency staircase of the utility model its objective is: the ladder height is increased and can put on the ground stably.

(3) summary of the invention:

A kind of steady emergency staircase of the utility model, one ladder main body, main body is made up of four foot of ladders, has between the foot of ladder being referred to as stepped plate, and the top is a pedal, and the main body both sides have crank to connect two foot of ladders; It is characterized in that: respectively have an extending pin in this foot of ladder, this extending pin can extend the location downwards, and increasing the length of foot of ladder, and the side of foot of ladder articulates a strut, and this strut can outwards put and extend; In view of the above, increase height as ladder with concealed extending pin, and in addition with the firm main body of strut.

A kind of steady emergency staircase of the utility model, its advantage is: can be provided on the ladder of finite length, can increase the ladder height, and steady safety.

Wherein, this foot of ladder simultaneously is provided with a chute hole and number locating hole, this locating hole is a slotted eye of being told a nearly U type by chute hole, and this extending pin precalculated position has a nose bar, nose bar is positioned at chute hole, can be by stirring nose bar with the extending pin upper and lower displacement, and nose bar is promptly located extending pin when being positioned at locating hole.

Wherein, the side has a rectangular groove outside this foot of ladder, embeds for strut, and this strut head is articulated in the rectangular groove top, and this strut end can stretch into a little pole, with this little pole of turn-button location.

(4) description of drawings:

The solid combination schematic diagram of Fig. 1 the utility model.

The solid of Fig. 2 the utility model struts schematic diagram.

The floor map of Fig. 3 the utility model chute hole, locating hole.

The nose bar of Fig. 4 the utility model, the generalized section of extending pin.

The side-looking floor map of Fig. 5 the utility model.

The side-looking of Fig. 6 the utility model launches floor map.

Fig. 7 the utility model is applied to the floor map of uneven ground.

Number in the figure is as follows:

10 main bodys, 12 stepped plates, 21 nose bars

11 foot of ladders, 13 pedals, 22 struts

111 chute holes, 14 cranks, 23 little poles

112 locating holes, 20 extending pins, 24 turn-buttons

113 rectangular grooves

(5) specific embodiment:

A kind of steady emergency staircase of the utility model, as shown in drawings, it has a ladder main body 10, and this main body 10 is made up of four foot of ladders 11, number stepped plate 12, a pedal 13 and two cranks 14; This main body 10 generally is the A font, be provided with several stepped plates 12 between two foot of ladders 11, and has a crank 14 between the adjacent foot of ladder 11, has a pedal 13 in foot of ladder 11 tops, the front of this foot of ladder 11 is provided with a chute hole 111, chute hole 111 sides side is provided with several locating holes 112, make locating hole 112 generally be U font hole, insert an extending pin 20 in this foot of ladder 11, this extending pin 20 is provided with a nose bar 21, nose bar 21 can be positioned at chute hole 111 or slip into locating hole 112, the side is provided with a rectangular groove 113 outside this foot of ladder 11, articulates a strut 22 in these rectangular groove 113 tops, makes strut 22 outwards put and inwardly to be embedded in and does the collection action in the rectangular groove 113, these strut 22 ends are inserted a ramuscule bar 23, and this ramuscule bar 23 is positioned at turn-button 24 on the strut 22 with one and gives fastening or loosen extension;

By above-mentioned textural association, a kind of steady emergency staircase of the utility model, when using operation, foot of ladder 11 is strutted action, extending pin 20 is extended downwards, nose bar 21 with extending pin 20 slides to locating hole 112 positions by chute hole 111 positions, make nose bar 21 be positioned at a locating hole 112 of certain height, to adjust the extension elongation of extending pin 20,, make the nose bar 21 of extending pin 20 be butted in the locating hole 112 and in being limited in simultaneously because human weight is to pressing down pedal 13, not displacement arbitrarily, to form a safeguard construction, also applicable to (as shown in Figure 7) on the broken terrain, each adjusts the length of extending pin 20 to adapt to uneven ground, after heightening main body 10, because center of gravity improves, and strut 22 outwards can be put, and ramuscule bar 23 is down stretched, and with turn-button 24 fastening ramuscule bars 23, make four ramuscule bars 23 can prop up ground, do not tilt arbitrarily, make the worker safer with firm main body 10.

Claims

1, a kind of steady emergency staircase, it has a ladder main body, and main body is made up of four foot of ladders, and the stepped plate of symmetry is arranged between the foot of ladder, and the top is a pedal, and the main body both sides have crank to connect two foot of ladders; It is characterized in that: respectively have one in this foot of ladder and can extend the location downwards to increase the extending pin of foot of ladder length, the side of this foot of ladder articulates a strut of outwards putting and extending.

2, a kind of steady emergency staircase according to claim 1, it is characterized in that: wherein this foot of ladder simultaneously is provided with chute hole and locating hole, this locating hole is a slotted eye of being told a nearly U type by chute hole, and this extending pin precalculated position has a nose bar, and nose bar is positioned at chute hole.

3, a kind of steady emergency staircase according to claim 1, it is characterized in that: wherein the side has a rectangular groove for the strut embedding outside this foot of ladder, this strut head is articulated in the rectangular groove top, and this strut end stretches into a little pole, with this little pole of turn-button location.